Well, it depends on what plant it is... But it is usually it's roots.
To store water, food, and air.
The plant cell has a vacoule to store water, food, and waste
Some roots store carbohydrates or water
Stems generally do not store food or water, as their main role is to provide structural support and transport nutrients between different parts of the plant. However, some plants have modified stems, such as rhizomes or tubers, that can store food reserves to support growth during periods of stress or dormancy.
The vacuole's function is to store food and water in the plant cell.
The vacuole's function is to store food and water in the plant cell.
vacuole
Dahlia store food in their tubers.
seed
Yes. Often being very large to store food and water.
Seeds store it in the endosperm.
Plants make food which sometimes they don't use right away. In the plants' cells there is a storage sac called a vacuole. This is where the cell stores food, water, and wastes. The plant will eventually use the food inside the vacuoles. The vacuoles are where the plant store its food.